Sunnen K16526AH Hard Steel Mandrel 4.375 In Shank K Series

Sunnen K16526AH Hard Steel Mandrel is a K-Series honing mandrel designed to hold a K16-size abrasive stone for precision bore honing. It features a 4.375-inch shank for stable alignment in Sunnen honing tools and weighs about 6.08 oz. This hard steel variant is the K-Series hard-steel mandrel corresponding to the K16 family, built for durable wear resistance in production honing. Mandrels in the K-Series secure the honing stones in place, enabling repeatable bore sizing and reliable surface finishes across production runs. The K16526AH is compatible with standard Sunnen tooling and is the exact Sunnen part number for users requiring the hard-steel option with a 4.375-inch shank. When paired with K16 abrasives, it supports controlled material removal within the bore manufacturing workflow and is suitable for high-volume honing environments where consistent results are essential. With a 4.375-inch shank length and a weight of roughly 6.08 oz, this mandrel offers a compact, balanced setup for production-grade honing applications.